材料制备方法对钴基氧化物热电性能的影响  

Influence of Material Preparation Methods on Thermoelectric Properties of Cobalt-based Oxides

作　　者：尹洋 武桂英 韦思敏 严嘉琳 Yin Yang;Wu Guiying;Wei Simin;Yan Jialin(Guangxi University,School of Resources,Environment and Materials,Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials,Nanning 530004,China)

机构地区：[1]广西大学资源环境与材料学院广西有色金属及特色材料加工重点实验室,广西南宁530004

出　　处：《科学技术创新》2022年第10期163-166,共4页Scientific and Technological Innovation

摘　　要：为研究制备方法对钴基氧化物热电性能的影响,采用固相烧结法和溶胶凝胶法制备了GdCoO_(3)和YBaCo_(4)O_(7),并在300K-1100K温度范围内测试了材料的塞贝克系数和电导率。结果表明不同制备方法对塞贝克系数影响较小,采用溶胶凝胶法制备的样品电导率都高于固相烧结法,因此通过溶胶凝胶法制备的样品可以获得较大热电功率因子。In order to study the effect of preparation methods on the thermoelectric properties of cobalt-based oxides, GdCoO_(3)and YBaCo_(4)O_(7)were prepared by solid-phase sintering and sol-gel methods, and the Seebeck coefficient and electrical conductivity of the materials were tested in the temperature range of 300K-1100K. The results show that different preparation methods have little effect on the Seebeck coefficient. The conductivity of the samples prepared by the sol-gel method is higher than that of the solid-phase sintering method, so the samples prepared by the sol-gel method can obtain a larger thermoelectric power factor.

关 键 词：钴基氧化物 固相烧结法 溶胶凝胶法 热电材料 

分 类 号：TM241.2[一般工业技术—材料科学与工程]